925: Cell Phones

2016-08-25T16:44:45Z

162.158.85.123: /* Explanation */

{{comic
| number = 925
| date = July 15, 2011
| title = Cell Phones
| image = cell_phones.png
| titletext = He holds the laptop like that on purpose, to make you cringe.
}}

==Explanation==
This comic is a good explanation of the correlation/causation fallacy, where one party states two unrelated events and posits that they must have influenced each other.

After hearing about the "Cell Phones Don't Cause Cancer" study, which refutes a claim made by the ''{{w|World Health Organization}}'' (just Google the debate, the comic doesn't focus much on it), [[Black Hat]] plots "Total Cancer Incidence" per 100,000 and "Cell Phone Users" per 100 on the same graph. The graph in frame 3 shows an exponential rise in cancer followed by an exponential rise in cell phone usage, which makes Black Hat comically come to the conclusion that cancer causes cell phones.

The comic highlights a well-known fallacy known as ''{{w|post hoc ergo propter hoc}}'', often shortened to simply ''post hoc.'' The Latin translates to "after this, therefore because of this," referring to the common mistake that because two events happen in chronological order, the former event must have caused the latter event. The fallacy is often the root cause of many superstitions (e.g., a person noticing he/she wore a special bracelet before getting a good test score thinks the bracelet was the source of his/her good fortune when it was more likely to be her socks.), but it often crosses into more serious areas of thinking. In this case, the scientific research community, which often prides itself on its intellectual aptitude, is gently mocked for being nonetheless prone to such poor reasoning all too often. The different possibilities are generally known as causation, when one thing is proven to cause another, or correlation, when changes in one thing are aligned with changes in another, but there is no proof that they are actually related.

The title text refers to the way Black Hat holds the laptop in panel 2. Being that Cueball (and Randall, for that matter) are quite into computers, the potential damage to a laptop screen either from the weight of its lower body or the pressure of the user's fingers on the LCD screen is enough to make him squirm in discomfort.

Note that the graph in frame 3 also shows that the increase in the number of cell phone users appears to coincide with a sudden decrease in cancer. Randall may have intended Cueball, and the reader, to assume Black Hat was going to say that cell phones prevent cancer. However, this makes Black Hat's alternate conclusion unexpected and therefore more ludicrous.

==Transcript==
:[Cueball holds a cellphone. Black Hat is sitting at a desk with a laptop.]
:Cueball: Another huge study found no evidence that cell phones cause cancer. What was the W.H.O. thinking?
:Black Hat: I think they just got it backward.

:[Black Hat turns towards Cueball, holding the laptop with one hand by the upper edge of the screen.]
:Cueball: Huh?
:Black Hat: Well, take a look.

:[There is a plot of total cancer incidence and cell phone users. Cancer rises from 1970 to 1990, then stays relatively steady. Cell phone use rises from roughly 1984, and steeply after 1990, to the present.]

:Cueball: You're not... There are ''so'' many problems with that.
:Black Hat: Just to be safe, until I see more data I'm going to assume cancer causes cell phones.

{{comic discussion}}
[[Category:Comics featuring Cueball]]
[[Category:Comics featuring Black Hat]]
[[Category:Comics with color]]
[[Category:Line graphs]]
[[Category:Math]]
[[Category:Statistics]]
[[Category:Cancer]]

Talk:1700: New Bug

2016-06-29T06:34:04Z

162.158.85.123:

I'm new. For the explanation: A bug, as in a computer (programming) bug, can be reported and tracked, and many systems allow collaboration on the reporting and tracking of problems, or bugs, in code, and their solutions. Cueball reported a problem (bug) he found in the code, which presumably caused the server (program)—which he wrote as part of his project—to try to read the passwords as URLs before storing them. This exposes serious cross-site scripting attacks and other serious security vulnerabilities, and since handling password and user account information usually requires a lot of programming, this would be difficult to fix, which is why the character off-panel suggests burning the project down, as that would be much easier, and would solve any security problems, much more quickly than fixing the bug would. The comment text refers to Cueball's horrid solution to a horrid problem: Instead of solving the problem that is causing the server to read passwords as URLs, he can instead leverage a known problem in the programme which reads URLs which prevents it from reading a particular way of representing text in binary form, by adding a few characters to the user's password that the URL-reading program can't read. This would also "salt" the user's password, which is a security technique that makes passwords harder to figure out when they are stored properly. Cueball thinks this would solve the original problem, and two other problems at the same time, the second problem being the fact that user's passwords aren't salted (a security problem). The third solved problem is difficult to deduce. &emsp;[[User:Zyzygy|Zyzygy]] 05:40, 29 June 2016 (UTC)
-----> The third bug is the unicode handling, which would need to be solved in order to salt passwords with emoji since these are unicode only character. Although I'm not sure if salting with emoji really increases security since as a rule i'd say nobody uses emoji in their passwords. [[Special:Contributions/162.158.85.123|162.158.85.123]] 06:34, 29 June 2016 (UTC)

explain xkcd - User contributions [en]

925: Cell Phones

Talk:1700: New Bug